predifferentiation

The story

1. Proto-Indo-European*per-
2. Proto-Indo-European*preh₂-
3. Proto-Indo-European*préh₂i?
4. Proto-Italic*prai
5. Proto-Italic*prai-
6. Latinprae-
7. Middle Englishpre-
8. Englishpre-
9. Proto-Indo-European*dwóh₁
10. Proto-Indo-European*trísinflu.
11. Proto-Indo-European*d(w)is-
12. Proto-Italic*dis-
13. Latindis-
14. Proto-Indo-European*bʰer-
15. Proto-Indo-European*bʰéreti
16. Proto-Italic*ferō
17. Latinferō
18. Latindifferō
19. Latindifferēns
20. Latindifferentia
21. New Latindifferentiō
22. New Latindifferentiātus
23. Englishdifferentiate
24. Englishdifferentiation
25. English todaypredifferentiation

From pre- + differentiation.